| Arnsberg to Novi di Modena | 466.76 mi (751.17 km) |
| Arnsberg to Novi Ligure | 458.82 mi (738.40 km) |
| Arnsberg to Nuoro | 766.96 mi (1,234.30 km) |
| Arnsberg to Occhiobello | 474.54 mi (763.70 km) |
| Arnsberg to Oderzo | 436.23 mi (702.05 km) |
| Arnsberg to Oggiono | 391.21 mi (629.60 km) |
| Arnsberg to Olbia | 726.31 mi (1,168.88 km) |
| Arnsberg to Oleggio | 400.38 mi (644.34 km) |
| Arnsberg to Olgiate Comasco | 389.02 mi (626.06 km) |
| Arnsberg to Olgiate Olona | 398.96 mi (642.07 km) |
| Arnsberg to Omegna | 380.66 mi (612.61 km) |
| Arnsberg to Opera | 417.80 mi (672.38 km) |
| Arnsberg to Oppeano | 443.67 mi (714.01 km) |
| Arnsberg to Orbassano | 441.25 mi (710.13 km) |
| Arnsberg to Orbetello | 635.21 mi (1,022.27 km) |
